Blood sugar monitoring devices are essential tools for managing diabetes, providing rapid insights into glucose levels. While designed for accuracy, these meters occasionally display error codes, which can be concerning for users. Understanding the meaning of these codes is an important step in ensuring reliable readings and effective diabetes management.
Decoding the E-3 Error
The “E-3” error code on a blood sugar monitor signals a problem with the test strip or testing process. This message acts as a safety feature, preventing the display of an inaccurate result when the system detects an issue. While the precise interpretation can vary slightly between meter brands, E-3 commonly indicates that the test strip is compromised, damaged, or has been used improperly. In some instances, for certain meters, an E-3 error might also appear if the blood glucose level is extremely high, exceeding the meter’s measurable range.
Common Causes of E-3 Errors
Several factors can lead to an E-3 error appearing on a blood sugar monitor. Test strips have expiration dates, and using expired or visibly damaged strips can prevent the meter from obtaining a valid reading. Improper storage is another frequent culprit, as exposure to extreme temperatures, high humidity, or leaving the test strip vial cap open can degrade the chemical reagents on the strips. Such environmental factors compromise the strip’s ability to react accurately with the blood sample.
Incorrect blood sample application also plays a role; an insufficient blood volume or incorrect application, such as touching the blood to the top of the strip instead of the designated sample tip, can trigger an E-3 error. Attempting to reuse a test strip, designed for single use only, will result in an error code. In rare cases, a foreign substance on the strip, a dirty test strip port, or even a meter malfunction could contribute to this error.
Troubleshooting and Resolving E-3 Errors
When an E-3 error appears, the immediate step is to discard the current test strip, as it is likely compromised. Then, retrieve a new, unused test strip from a properly sealed vial to repeat the test. Check the expiration date on the test strip vial and confirm the cap is securely closed after each use to protect remaining strips. Before performing the next test, ensure your hands are clean and dry, and that any alcohol used for skin preparation has completely evaporated before lancing.
Applying an adequate blood sample correctly to the test strip’s designated area is important for a successful reading. Gently cleaning the meter’s test strip port with a soft, dry cloth, following manufacturer guidelines, can also help resolve issues caused by debris. If E-3 errors persist despite using multiple new strips and verifying technique, performing a control solution test can help determine if the meter itself is functioning accurately. If errors continue, especially if accompanied by symptoms of very high or low blood sugar, it is important to contact a healthcare professional or the meter’s customer support for further assistance.